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A storage and access method for a resource hard disk of a high-definition video-on-demand system

An on-demand system and high-definition video technology, applied in the storage and access field of resource hard disks, can solve problems such as restricting video server service performance and reducing hard disk read and write bandwidth, reducing the number of seeks and the number of video servers, avoiding sharp declines, The effect of large service efficiency

Active Publication Date: 2018-07-03
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of the video server is mainly limited by the I / O performance of the hard disk, because when multiple threads (processes) read and write a disk at the same time, the bandwidth of the hard disk read and write will decrease sharply, seriously restricting the service efficiency of the video server

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] A high-definition video-on-demand system is based on a distributed video server cluster composed of multiple front-end server clusters F. Each front-end server cluster F includes multiple servers, and each server corresponds to at least one resource hard disk. Each resource hard disk belongs to and only belongs to one server in F, and hard disk storage cabinets are not used to centrally store hard disks.

[0024] When a video file is stored, it is first physically cut into multiple segments according to a fixed length, and the final segment length is smaller than the fixed length, which is filled with randomly generated data, and then stored in each resource of the cluster F according to the server service bandwidth on the hard drive. Here, the server service bandwidth is the sum of the network bandwidth of a server and the maximum random read bandwidth of all resource hard disks of the server, whichever is smaller.

[0025] As a preferred embodiment, the specific met...

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PUM

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Abstract

The invention discloses a method for storing and accessing resource hard disks of a high-definition video-on-demand system, comprising the steps as follows: segmenting a high-definition video file with large size, randomly and uniformly storing the segmented files on all resource hard disks in a cluster in a distributed manner according to bandwidth of a server so as to realize the load balancing of each resource hard disk; independently scheduling each resource hard disk in the video server cluster by using a request scheduling queue when accessing to keep the I / O bandwidth of the resource hard disk at a peak value. Through the method of the invention, the prepositive video server cluster can still maintain maximal service efficiency under a high load.

Description

technical field [0001] The invention relates to a data transmission method, in particular to a method for storing and accessing a resource hard disk of a high-definition video-on-demand system. Background technique [0002] High-definition video-on-demand requires high-stability, high-bandwidth network and storage device transmission performance, especially for full HD and 4K high-definition video on demand. At present, it is unrealistic to carry out real high-definition video-on-demand services on a large scale over the wide area network. One solution is to adopt the "pre-server solution", that is, to deploy video server clusters in the exchange room of each residential area or in the ADSL LAN. All these front-end server clusters form a distributed server cluster, so that most of the video The traffic is limited within the LAN, avoiding the bandwidth limitation of the WAN. [0003] However, when ordinary video servers are under high load, the hard disk read and write effi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/231
CPCH04N21/23103
Inventor 卢伟
Owner XIAMEN UNIV
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